{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE CPP #-}
module Text.Haiji.TH
( haiji
, haijiFile
, key
) where
#if MIN_VERSION_base(4,8,0)
#else
import Control.Applicative
#endif
import Control.Monad.Trans.Reader
import Data.Dynamic
import qualified Data.HashMap.Strict as M
import Data.Maybe
import Language.Haskell.TH
import Language.Haskell.TH.Quote
import Language.Haskell.TH.Syntax hiding (lift)
import qualified Data.Text as T
import qualified Data.Text.Lazy as LT
import Text.Haiji.Parse
import Text.Haiji.Syntax
import Text.Haiji.Dictionary
import Text.Haiji.Types
haiji :: Environment -> QuasiQuoter
haiji :: Environment -> QuasiQuoter
haiji Environment
env = QuasiQuoter { quoteExp :: String -> Q Exp
quoteExp = forall (q :: * -> *). Quasi q => Environment -> String -> q Exp
haijiExp Environment
env
, quotePat :: String -> Q Pat
quotePat = forall a. HasCallStack => a
undefined
, quoteType :: String -> Q Type
quoteType = forall a. HasCallStack => a
undefined
, quoteDec :: String -> Q [Dec]
quoteDec = forall a. HasCallStack => a
undefined
}
haijiFile :: Quasi q => Environment -> FilePath -> q Exp
haijiFile :: forall (q :: * -> *). Quasi q => Environment -> String -> q Exp
haijiFile Environment
env String
file = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ (forall (q :: * -> *). QuasiWithFile q => String -> q Jinja2
parseFile String
file) forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= forall (q :: * -> *). Quasi q => Environment -> Jinja2 -> q Exp
haijiTemplate Environment
env
haijiExp :: Quasi q => Environment -> String -> q Exp
haijiExp :: forall (q :: * -> *). Quasi q => Environment -> String -> q Exp
haijiExp Environment
env String
str = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ (forall a. IO a -> Q a
runIO forall a b. (a -> b) -> a -> b
$ forall (q :: * -> *). QuasiWithFile q => String -> q Jinja2
parseString String
str) forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= forall (q :: * -> *). Quasi q => Environment -> Jinja2 -> q Exp
haijiTemplate Environment
env
key :: QuasiQuoter
key :: QuasiQuoter
key = QuasiQuoter { quoteExp :: String -> Q Exp
quoteExp = \String
k -> [e| \v -> singleton v (Key :: Key $(litT . strTyLit $ k)) |]
, quotePat :: String -> Q Pat
quotePat = forall a. HasCallStack => a
undefined
, quoteType :: String -> Q Type
quoteType = forall a. HasCallStack => a
undefined
, quoteDec :: String -> Q [Dec]
quoteDec = forall a. HasCallStack => a
undefined
}
haijiTemplate :: Quasi q => Environment -> Jinja2 -> q Exp
haijiTemplate :: forall (q :: * -> *). Quasi q => Environment -> Jinja2 -> q Exp
haijiTemplate Environment
env Jinja2
tmpl = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| Template $(haijiASTs env Nothing (jinja2Child tmpl) (jinja2Base tmpl)) |]
haijiASTs :: Quasi q => Environment -> Maybe [AST 'Fully] -> [AST 'Fully] -> [AST 'Fully] -> q Exp
haijiASTs :: forall (q :: * -> *).
Quasi q =>
Environment
-> Maybe [AST 'Fully] -> [AST 'Fully] -> [AST 'Fully] -> q Exp
haijiASTs Environment
env Maybe [AST 'Fully]
parentBlock [AST 'Fully]
children [AST 'Fully]
asts = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| LT.concat <$> sequence $(listE $ map (haijiAST env parentBlock children) asts) |]
haijiAST :: Quasi q => Environment -> Maybe [AST 'Fully] -> [AST 'Fully] -> AST 'Fully -> q Exp
haijiAST :: forall (q :: * -> *).
Quasi q =>
Environment
-> Maybe [AST 'Fully] -> [AST 'Fully] -> AST 'Fully -> q Exp
haijiAST Environment
_env Maybe [AST 'Fully]
_parentBlock [AST 'Fully]
_children (Literal Text
l) =
forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| return $(litE $ stringL $ T.unpack l) |]
haijiAST Environment
env Maybe [AST 'Fully]
_parentBlock [AST 'Fully]
_children (Eval Expression
x) =
if Environment -> Bool
autoEscape Environment
env
then forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (`escapeBy` htmlEscape) . toLT <$> $(eval x) |]
else forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (`escapeBy` rawEscape) . toLT <$> $(eval x) |]
haijiAST Environment
env Maybe [AST 'Fully]
parentBlock [AST 'Fully]
children (Condition Expression
p [AST 'Fully]
ts Maybe [AST 'Fully]
fs) =
forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| do cond <- $(eval p)
if cond
then $(haijiASTs env parentBlock children ts)
else $(maybe [e| return "" |] (haijiASTs env parentBlock children) fs)
|]
haijiAST Environment
env Maybe [AST 'Fully]
parentBlock [AST 'Fully]
children (Foreach Identifier
k Expression
xs [AST 'Fully]
loopBody Maybe [AST 'Fully]
elseBody) =
forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| do dicts <- $(eval xs)
p <- ask
let len = toInteger $ length dicts
if 0 < len
then return $ LT.concat
[ runReader $(haijiASTs env parentBlock children loopBody)
(p `merge`
singleton x (Key :: Key $(litT . strTyLit $ show k)) `merge`
singleton (loopVariables len ix) (Key :: Key "loop")
)
| (ix, x) <- zip [0..] dicts
]
else $(maybe [e| return "" |] (haijiASTs env parentBlock children) elseBody)
|]
haijiAST Environment
_env Maybe [AST 'Fully]
_parentBlock [AST 'Fully]
_children (Raw String
raw) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| return raw |]
haijiAST Environment
_env Maybe [AST 'Fully]
_parentBlock [AST 'Fully]
_children (Base [AST 'Fully]
_asts) = forall a. HasCallStack => a
undefined
haijiAST Environment
env Maybe [AST 'Fully]
parentBlock [AST 'Fully]
children (Block Bool
_base Identifier
name Bool
_scoped [AST 'Fully]
body) =
case forall a. [a] -> Maybe a
listToMaybe [ [AST 'Fully]
b | Block Bool
_ Identifier
n Bool
_ [AST 'Fully]
b <- [AST 'Fully]
children, Identifier
n forall a. Eq a => a -> a -> Bool
== Identifier
name ] of
Maybe [AST 'Fully]
Nothing -> forall (q :: * -> *).
Quasi q =>
Environment
-> Maybe [AST 'Fully] -> [AST 'Fully] -> [AST 'Fully] -> q Exp
haijiASTs Environment
env Maybe [AST 'Fully]
parentBlock [AST 'Fully]
children [AST 'Fully]
body
Just [AST 'Fully]
child -> forall (q :: * -> *).
Quasi q =>
Environment
-> Maybe [AST 'Fully] -> [AST 'Fully] -> [AST 'Fully] -> q Exp
haijiASTs Environment
env (forall a. a -> Maybe a
Just [AST 'Fully]
body) [AST 'Fully]
children [AST 'Fully]
child
haijiAST Environment
env Maybe [AST 'Fully]
parentBlock [AST 'Fully]
children AST 'Fully
Super = forall b a. b -> (a -> b) -> Maybe a -> b
maybe (forall a. HasCallStack => String -> a
error String
"invalid super()") (forall (q :: * -> *).
Quasi q =>
Environment
-> Maybe [AST 'Fully] -> [AST 'Fully] -> [AST 'Fully] -> q Exp
haijiASTs Environment
env forall a. Maybe a
Nothing [AST 'Fully]
children) Maybe [AST 'Fully]
parentBlock
haijiAST Environment
_env Maybe [AST 'Fully]
_parentBlock [AST 'Fully]
_children (Comment String
_) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| return "" |]
haijiAST Environment
env Maybe [AST 'Fully]
parentBlock [AST 'Fully]
children (Set Identifier
lhs Expression
rhs [AST 'Fully]
scopes) =
forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| do val <- $(eval rhs)
p <- ask
return $ runReader $(haijiASTs env parentBlock children scopes)
(p `merge` singleton val (Key :: Key $(litT . strTyLit $ show lhs)))
|]
loopVariables :: Integer -> Integer -> Dict '["first" :-> Bool, "index" :-> Integer, "index0" :-> Integer, "last" :-> Bool, "length" :-> Integer, "revindex" :-> Integer, "revindex0" :-> Integer]
loopVariables :: Integer
-> Integer
-> Dict
'["first" :-> Bool, "index" :-> Integer, "index0" :-> Integer,
"last" :-> Bool, "length" :-> Integer, "revindex" :-> Integer,
"revindex0" :-> Integer]
loopVariables Integer
len Integer
ix = forall (kv :: [*]). HashMap String Dynamic -> Dict kv
Dict forall a b. (a -> b) -> a -> b
$ forall k v. (Eq k, Hashable k) => [(k, v)] -> HashMap k v
M.fromList [ (String
"first", forall a. Typeable a => a -> Dynamic
toDyn (Integer
ix forall a. Eq a => a -> a -> Bool
== Integer
0))
, (String
"index", forall a. Typeable a => a -> Dynamic
toDyn (Integer
ix forall a. Num a => a -> a -> a
+ Integer
1))
, (String
"index0", forall a. Typeable a => a -> Dynamic
toDyn Integer
ix)
, (String
"last", forall a. Typeable a => a -> Dynamic
toDyn (Integer
ix forall a. Eq a => a -> a -> Bool
== Integer
len forall a. Num a => a -> a -> a
- Integer
1))
, (String
"length", forall a. Typeable a => a -> Dynamic
toDyn Integer
len)
, (String
"revindex", forall a. Typeable a => a -> Dynamic
toDyn (Integer
len forall a. Num a => a -> a -> a
- Integer
ix))
, (String
"revindex0", forall a. Typeable a => a -> Dynamic
toDyn (Integer
len forall a. Num a => a -> a -> a
- Integer
ix forall a. Num a => a -> a -> a
- Integer
1))
]
eval :: Quasi q => Expression -> q Exp
eval :: forall (q :: * -> *). Quasi q => Expression -> q Exp
eval (Expression Expr External LevelMax
expression) = forall (q :: * -> *) level. Quasi q => Expr External level -> q Exp
go Expr External LevelMax
expression where
go :: Quasi q => Expr External level -> q Exp
go :: forall (q :: * -> *) level. Quasi q => Expr External level -> q Exp
go (ExprLift Expr External lv
e) = forall (q :: * -> *) level. Quasi q => Expr External level -> q Exp
go Expr External lv
e
go (ExprIntegerLiteral Integer
n) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| return (n :: Integer) |]
go (ExprStringLiteral StringLiteral
s) = let x :: String
x = StringLiteral -> String
unwrap StringLiteral
s in forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| return (x :: T.Text) |]
go (ExprBooleanLiteral Bool
b) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| return b |]
go (ExprVariable Identifier
v) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| retrieve <$> ask <*> return (Key :: Key $(litT . strTyLit $ show v)) |]
go (ExprParen Expr External LevelMax
e) = forall (q :: * -> *) level. Quasi q => Expr External level -> q Exp
go Expr External LevelMax
e
go (ExprRange [Expr External LevelMax
stop]) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (\b -> [0..b-1]) <$> $(go stop) |]
go (ExprRange [Expr External LevelMax
start, Expr External LevelMax
stop]) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (\a b -> [a..b-1]) <$> $(go start) <*> $(go stop) |]
go (ExprRange [Expr External LevelMax
start, Expr External LevelMax
stop, Expr External LevelMax
step]) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (\a b c -> [a,a+c..b-1]) <$> $(go start) <*> $(go stop) <*> $(go step) |]
go (ExprRange [Expr External LevelMax]
_) = forall a. HasCallStack => String -> a
error String
"unreachable"
go (ExprAttributed Expr External Z
e []) = forall (q :: * -> *) level. Quasi q => Expr External level -> q Exp
go Expr External Z
e
go (ExprAttributed Expr External Z
e [Identifier]
attrs) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| retrieve <$> $(go $ ExprAttributed e $ init attrs) <*> return (Key :: Key $(litT . strTyLit $ show $ last attrs)) |]
go (ExprFiltered Expr External (S Z)
e []) = forall (q :: * -> *) level. Quasi q => Expr External level -> q Exp
go Expr External (S Z)
e
go (ExprFiltered Expr External (S Z)
e [Filter]
filters) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| $(applyFilter (last filters) $ ExprFiltered e $ init filters) |] where
applyFilter :: Filter -> Expr External level -> m Exp
applyFilter Filter
FilterAbs Expr External level
e' = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| abs <$> $(go e') |]
applyFilter Filter
FilterLength Expr External level
e' = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| toInteger . length <$> $(go e') |]
go (ExprPow Expr External (S (S (S Z)))
e1 Expr External (S (S Z))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (^) <$> $(go e1) <*> $(go e2) |]
go (ExprMul Expr External (S (S (S (S Z))))
e1 Expr External (S (S (S Z)))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (*) <$> $(go e1) <*> $(go e2) |]
go (ExprDivF Expr External (S (S (S (S Z))))
e1 Expr External (S (S (S Z)))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (/) <$> $(go e1) <*> $(go e2) |]
go (ExprDivI Expr External (S (S (S (S Z))))
e1 Expr External (S (S (S Z)))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| div <$> $(go e1) <*> $(go e2) |]
go (ExprMod Expr External (S (S (S (S Z))))
e1 Expr External (S (S (S Z)))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| mod <$> $(go e1) <*> $(go e2) |]
go (ExprAdd Expr External (S (S (S (S (S Z)))))
e1 Expr External (S (S (S (S Z))))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (+) <$> $(go e1) <*> $(go e2) |]
go (ExprSub Expr External (S (S (S (S (S Z)))))
e1 Expr External (S (S (S (S Z))))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (-) <$> $(go e1) <*> $(go e2) |]
go (ExprEQ Expr External (S (S (S (S (S Z)))))
e1 Expr External (S (S (S (S (S Z)))))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (==) <$> $(go e1) <*> $(go e2) |]
go (ExprNEQ Expr External (S (S (S (S (S Z)))))
e1 Expr External (S (S (S (S (S Z)))))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (/=) <$> $(go e1) <*> $(go e2) |]
go (ExprGT Expr External (S (S (S (S (S Z)))))
e1 Expr External (S (S (S (S (S Z)))))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (>) <$> $(go e1) <*> $(go e2) |]
go (ExprGE Expr External (S (S (S (S (S Z)))))
e1 Expr External (S (S (S (S (S Z)))))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (>=) <$> $(go e1) <*> $(go e2) |]
go (ExprLT Expr External (S (S (S (S (S Z)))))
e1 Expr External (S (S (S (S (S Z)))))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (<) <$> $(go e1) <*> $(go e2) |]
go (ExprLE Expr External (S (S (S (S (S Z)))))
e1 Expr External (S (S (S (S (S Z)))))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (<=) <$> $(go e1) <*> $(go e2) |]
go (ExprAnd Expr External (S (S (S (S (S (S (S Z)))))))
e1 Expr External (S (S (S (S (S (S Z))))))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (&&) <$> $(go e1) <*> $(go e2) |]
go (ExprOr Expr External LevelMax
e1 Expr External (S (S (S (S (S (S (S Z)))))))
e2) = forall (m :: * -> *) a. Quasi m => Q a -> m a
runQ [e| (||) <$> $(go e1) <*> $(go e2) |]